{"id":"https://openalex.org/W2044512154","doi":"https://doi.org/10.1109/dbta.2010.5658988","title":"User-Item Missing Ratings Complement Based on Two-Dimensional Normal Distribution","display_name":"User-Item Missing Ratings Complement Based on Two-Dimensional Normal Distribution","publication_year":2010,"publication_date":"2010-11-01","ids":{"openalex":"https://openalex.org/W2044512154","doi":"https://doi.org/10.1109/dbta.2010.5658988","mag":"2044512154"},"language":"en","primary_location":{"id":"doi:10.1109/dbta.2010.5658988","is_oa":false,"landing_page_url":"https://doi.org/10.1109/dbta.2010.5658988","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2010 2nd International Workshop on Database Technology and Applications","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5085890441","display_name":"Xiufeng Xia","orcid":"https://orcid.org/0000-0002-4260-6479"},"institutions":[{"id":"https://openalex.org/I125904092","display_name":"Shenyang Aerospace University","ror":"https://ror.org/02423gm04","country_code":"CN","type":"education","lineage":["https://openalex.org/I125904092"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Xiu-Feng Xia","raw_affiliation_strings":["School of Computer, Shenyang Aerospace University, Shenyang, China","Sch. of Comput., Shenyang Aerosp. Univ., Shenyang, China"],"affiliations":[{"raw_affiliation_string":"School of Computer, Shenyang Aerospace University, Shenyang, China","institution_ids":["https://openalex.org/I125904092"]},{"raw_affiliation_string":"Sch. of Comput., Shenyang Aerosp. Univ., Shenyang, China","institution_ids":["https://openalex.org/I125904092"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5103203366","display_name":"Xiang Liu","orcid":"https://orcid.org/0000-0002-2899-8007"},"institutions":[{"id":"https://openalex.org/I125904092","display_name":"Shenyang Aerospace University","ror":"https://ror.org/02423gm04","country_code":"CN","type":"education","lineage":["https://openalex.org/I125904092"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xiang Liu","raw_affiliation_strings":["School of Computer, Shenyang Aerospace University, Shenyang, China","Sch. of Comput., Shenyang Aerosp. Univ., Shenyang, China"],"affiliations":[{"raw_affiliation_string":"School of Computer, Shenyang Aerospace University, Shenyang, China","institution_ids":["https://openalex.org/I125904092"]},{"raw_affiliation_string":"Sch. of Comput., Shenyang Aerosp. Univ., Shenyang, China","institution_ids":["https://openalex.org/I125904092"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5027938867","display_name":"Xiaoming Li","orcid":"https://orcid.org/0000-0002-9956-1793"},"institutions":[{"id":"https://openalex.org/I125904092","display_name":"Shenyang Aerospace University","ror":"https://ror.org/02423gm04","country_code":"CN","type":"education","lineage":["https://openalex.org/I125904092"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xiao-Ming Li","raw_affiliation_strings":["School of Computer, Shenyang Aerospace University, Shenyang, China","Sch. of Comput., Shenyang Aerosp. Univ., Shenyang, China"],"affiliations":[{"raw_affiliation_string":"School of Computer, Shenyang Aerospace University, Shenyang, China","institution_ids":["https://openalex.org/I125904092"]},{"raw_affiliation_string":"Sch. of Comput., Shenyang Aerosp. Univ., Shenyang, China","institution_ids":["https://openalex.org/I125904092"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5085890441"],"corresponding_institution_ids":["https://openalex.org/I125904092"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.14445479,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":"22","issue":null,"first_page":"1","last_page":"6"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10203","display_name":"Recommender Systems and Techniques","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10203","display_name":"Recommender Systems and Techniques","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12384","display_name":"Customer churn and segmentation","score":0.97079998254776,"subfield":{"id":"https://openalex.org/subfields/1406","display_name":"Marketing"},"field":{"id":"https://openalex.org/fields/14","display_name":"Business, Management and Accounting"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10538","display_name":"Data Mining Algorithms and Applications","score":0.9485999941825867,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/complement","display_name":"Complement (music)","score":0.8766776919364929},{"id":"https://openalex.org/keywords/missing-data","display_name":"Missing data","score":0.8168491125106812},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.73215651512146},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.5710568428039551},{"id":"https://openalex.org/keywords/recommender-system","display_name":"Recommender system","score":0.47043225169181824},{"id":"https://openalex.org/keywords/value","display_name":"Value (mathematics)","score":0.4571291506290436},{"id":"https://openalex.org/keywords/quality","display_name":"Quality (philosophy)","score":0.4416193962097168},{"id":"https://openalex.org/keywords/variable","display_name":"Variable (mathematics)","score":0.4206277132034302},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.4170882999897003},{"id":"https://openalex.org/keywords/machine-learning","display_name":"Machine learning","score":0.28756773471832275},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.15385282039642334}],"concepts":[{"id":"https://openalex.org/C112313634","wikidata":"https://www.wikidata.org/wiki/Q7886648","display_name":"Complement (music)","level":5,"score":0.8766776919364929},{"id":"https://openalex.org/C9357733","wikidata":"https://www.wikidata.org/wiki/Q6878417","display_name":"Missing data","level":2,"score":0.8168491125106812},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.73215651512146},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.5710568428039551},{"id":"https://openalex.org/C557471498","wikidata":"https://www.wikidata.org/wiki/Q554950","display_name":"Recommender system","level":2,"score":0.47043225169181824},{"id":"https://openalex.org/C2776291640","wikidata":"https://www.wikidata.org/wiki/Q2912517","display_name":"Value (mathematics)","level":2,"score":0.4571291506290436},{"id":"https://openalex.org/C2779530757","wikidata":"https://www.wikidata.org/wiki/Q1207505","display_name":"Quality (philosophy)","level":2,"score":0.4416193962097168},{"id":"https://openalex.org/C182365436","wikidata":"https://www.wikidata.org/wiki/Q50701","display_name":"Variable (mathematics)","level":2,"score":0.4206277132034302},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.4170882999897003},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.28756773471832275},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.15385282039642334},{"id":"https://openalex.org/C55493867","wikidata":"https://www.wikidata.org/wiki/Q7094","display_name":"Biochemistry","level":1,"score":0.0},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.0},{"id":"https://openalex.org/C111472728","wikidata":"https://www.wikidata.org/wiki/Q9471","display_name":"Epistemology","level":1,"score":0.0},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.0},{"id":"https://openalex.org/C104317684","wikidata":"https://www.wikidata.org/wiki/Q7187","display_name":"Gene","level":2,"score":0.0},{"id":"https://openalex.org/C127716648","wikidata":"https://www.wikidata.org/wiki/Q104053","display_name":"Phenotype","level":3,"score":0.0},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0},{"id":"https://openalex.org/C188082640","wikidata":"https://www.wikidata.org/wiki/Q1780899","display_name":"Complementation","level":4,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/dbta.2010.5658988","is_oa":false,"landing_page_url":"https://doi.org/10.1109/dbta.2010.5658988","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2010 2nd International Workshop on Database Technology and Applications","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":7,"referenced_works":["https://openalex.org/W2008345063","https://openalex.org/W2020480318","https://openalex.org/W2042281163","https://openalex.org/W2050716003","https://openalex.org/W2110325612","https://openalex.org/W2950332743","https://openalex.org/W6676522543"],"related_works":["https://openalex.org/W4380150146","https://openalex.org/W3024870410","https://openalex.org/W2410652950","https://openalex.org/W4390273403","https://openalex.org/W4283773154","https://openalex.org/W4386781444","https://openalex.org/W3139174110","https://openalex.org/W4289597203","https://openalex.org/W4246980185","https://openalex.org/W2085630472"],"abstract_inverted_index":{"The":[0,99],"User-Item":[1,73,93,116],"missing":[2,19,51,72,115],"rating":[3,74,94],"data":[4,10],"are":[5,21,33],"a":[6,35,45],"kind":[7],"of":[8,41,122],"uncertain":[9],"in":[11,15,67,125],"e-commerce":[12],"website,":[13],"but":[14],"recommendation":[16,111,123,127],"system":[17],"these":[18],"ratings":[20,43,63,117],"the":[22,30,38,50,58,62,68,71,79,91,114,120],"important":[23],"information":[24],"when":[25],"implementing":[26],"personalized":[27],"recommendations.":[28],"Currently,":[29],"existing":[31,69],"methods":[32],"using":[34],"fixed":[36],"value,":[37],"average":[39],"value":[40,47],"all":[42],"or":[44],"predicted":[46],"to":[48,56],"replace":[49],"values.":[52],"In":[53],"this":[54,104],"paper,":[55],"solve":[57],"issue":[59],"which":[60,83],"considers":[61],"factors":[64],"is":[65,84,88,97],"unilateral":[66],"methods,":[70],"complement":[75,95],"model":[76],"based":[77],"on":[78],"two-dimensional":[80,85,92],"random":[81],"variable":[82],"normal":[86],"distribution":[87],"proposed,":[89],"and":[90,118],"algorithm":[96],"designed.":[98],"experimental":[100],"results":[101],"show":[102],"that":[103],"method":[105],"could":[106],"effectively":[107],"resolve":[108],"low":[109],"efficiency":[110],"caused":[112],"by":[113],"improve":[119],"quality":[121],"significantly":[124],"E-commerce":[126],"system.":[128]},"counts_by_year":[{"year":2022,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}